A third person has died from injuries related to a powerful explosion earlier this week at a plant in Quebec’s Eastern Townships. Marc Couture, a worker at the plant, died at Montreal hospital on Saturday evening. Sylvie Robitaille, a spokeswoman for the hospital, says Couture suffered burns on 90 per cent of his body and was in an induced coma. Robitaille says three people are still in hospital with non life-threatening injuries and that 18 people were injured in total. The explosion was at a production plant belonging to Neptune Technologies & Bioressources, in Sherbrooke, Que.